Rotator Cuff/pec

Question 1

Origin of Teres Major

Answer 1

Scapula: lateral border, lower 1/3 including oval area and inferior angle

Question 2

Insertion of Teres Major

Answer 2

Humerus: crest of the lesser tuberosity

Question 3

Nerve for Teres Major

Answer 3

Lower scapular nerve (C56)

Question 4

Action of Teres Major

Answer 4

Shoulder internal rotation, extension, and hyper extension

Question 5

Origin of Teres minor

Answer 5

Scapula: lateral border, upper 2/3

Question 6

Insertion of Teres minor

Answer 6

Humerus: inferior facet of greater tuberosity

Question 7

Nerve of Teres minor

Answer 7

Axillary nerve (c56)

Question 8

Actions of Teres minor

Answer 8

Shoulder external rotation, adduction, extension, holds head of humerus in glenoid fossa and depresses to allow should abduction

Question 9

Origin of infraspinatus

Answer 9

Scapula: infraspinous fossa medial 2/3

Question 10

Insertion of the Infraspinatus

Answer 10

Humerus: middle facet of greater tuberosity

Question 11

Nerve of Infraspinatus

Answer 11

Suprascapular nerve (c56)

Question 12

Actions of Infraspinatus

Answer 12

Shoulder External rotation; holds head f humerus in glenoid fossa and depresses it to allow shoulder abduction

Question 13

Origin of Supraspinatus

Answer 13

Scapula: supraspinous fossa, medial 2/3

Question 14

Insertion of supraspinatus

Answer 14

Superior facet of greater tuberosity

Question 15

Nerve of supraspinatus

Answer 15

Suprascapular nerve (c5)

Question 16

Actions of Supraspinatus

Answer 16

Shoulder abduction (initiates)

Question 17

Origin of Subscapularis

Answer 17

Subscapular fossa, medial 2/3

Question 18

Insertion of subscapularis

Answer 18

Humerus: Crest of the lesser tuberosity

Question 19

Nerve for subscapularis

Answer 19

Upper and lower subscapular nerve (c56)

Question 20

Action of Subscapularis

Answer 20

Shoulder internal rotation; holds head of humerus in glenoid fossa and depresses to allow shoulder abduction

Question 21

Origin of Deltoid

Answer 21

Clavicle: deltoid tubercle
Scapula: lateral border of acromion, inferior lip of spine to smooth triangular space

Question 22

Insertion of deltoid

Answer 22

Humerus: deltoid tubercle

Question 23

Nerve of deltoid

Answer 23

Axillary nerve (c56)

Question 24

Actions of deltoid

Answer 24

Anterior: horizontal adduction, adduction, and internal rotation

Middle: shoulder abduction

Posterior: shoulder external rotation, horizontal abduction, extension and hyper extension

Question 25

Origin of pectoralis major

Answer 25

Clavicular Head: medial 1/2 superior surface and anterior border

Sternocostal Head: lateral 1/2 anterior surface of manubrium/eternal body to rib 7
Ribs: costal cartilage of all true ribs

Aponeurosis: external oblique abdominis

Question 26

Insertion of pectoralis major

Answer 26

Humerus: Crest of greater tuberosity

Question 27

Nerve of pectoralis major

Answer 27

Medial and Lateral pectoral nerve c5-8,t1

Question 28

Actions of pectoralis major

Answer 28

Shoulder internal rotation, adduction, and horizontal adduction

Question 29

Pectoralis minor

Answer 29

Ribs 3-5 near the costal cartilage and intercostal fascia

Question 30

Insertion of pectoralis minor

Answer 30

Scapula: Medial border of the coracoid process

Question 31

Nerve of pectoralis minor

Answer 31

Medial pectoral nerve c8,t1

Question 32

Actions of pectoralis minor

Answer 32

Scapular abduction, downward rotation, depression

Question 33

Origin of Subclavius

Answer 33

Rib 1 junction of costal cartilage

Question 34

Insertion of subclavius

Answer 34

Sublavian groove of clavicle

Question 35

Nerve of subclavius

Answer 35

Nerve to subclavius (c8t1

Question 36

Actions of subclavius

Answer 36

Clavicular depression

Scapular depression, abduction, and downward rotation